大亚湾真鲷资源状况研究  

A STUDY ON STATUS OF RED SEA BREAM PAGROSOMUS MAJOR STOCK IN DAYA BAY

作　　者：陈涛[1] 林金钅表 郭金富[1] 陈琳[1] 

机构地区：[1]中国水产科学研究院南海水产研究所,广东广州510300

出　　处：《热带海洋学报》2003年第3期30-35,共6页Journal of Tropical Oceanography

基　　金：农业部"九五"重点科研项目(95 B 96 10 02 01)

摘　　要：根据在大亚湾进行的渔业资源调查资料,对真鲷群体的分析表明,真鲷生殖群体约每年10月至翌年2月入湾产卵,主要分布于湾口至湾中岛礁的周围水域,群体的优势体长为450—600mm(56.9%)、优势体重为1500—3500g(59.8%),年龄组成以3—6龄鱼为主(66.7%);成鱼和鱼苗产量自1986年以来急剧减少,至1999年鱼苗年产量仅为1986年的0.9%,表明大亚湾的真鲷资源严重衰竭。The analysis on fishery survey data in the Daya Bay showed that the breeding stock of red sea bream Pagrosomus majormigrates into the Daya Bay from October to next February. The breading stock distributes in the waters around the islands in the mouth and central part of the Bay. The dominant body lengths of the breading stock range from 450 to 600mm (56.9%), the dominant body weights from 1 500 to 3 500g (59.8%), and the dominant ages from 3 to 6 years (66.7%). The commercial catch of the stock has declined since 1986, and the catch of fry in 1999 was only 0.9% of that in 1986, indicating that the stock of red sea bream in the Daya Bay has been depleted.

关 键 词：真鲷 群体组成 资源变动 大亚湾 

分 类 号：S932[农业科学—渔业资源]